Look at the location of elements A,B,C,and D in the following periodic table.Consider the oxides that form when the elements A-D are in their highest oxidation states. 
-Which oxide is the most basic?
Definitions:
Net Wealth
The total value of all financial and non-financial assets owned by an individual, company, or country, minus any debts.
Interest Rates
The cost of borrowing or the reward for saving, typically expressed as a percentage of the amount loaned or saved over a specified period.
Consumption
denotes the act of using goods and services for personal or collective needs, often a major component of GDP.
Consumption Function
It is an economic formula representing the relationship between total consumption and gross national income, suggesting that consumption patterns are directly related to income levels.
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